James Cameron has his hands full with his blockbuster Avatar franchise at the moment, but the acclaimed Canadian director has already set his next project. According to Deadline , Cameron has purchased the film rights to the forthcoming book Ghosts of Hiroshima , the sequel to the 2010 historical book The Last Train From Hiroshima , which Cameron first optioned back in 2010. It's been a passion project of Cameron's for some time, though he's been busy in recent years with the cont...